CN215434935U

CN215434935U - Novel extrusion die

Info

Publication number: CN215434935U
Application number: CN202121284257.6U
Authority: CN
Inventors: 张锋; 杨增
Original assignee: Belden Hirschmann Industries Suzhou Co Ltd
Current assignee: Belden Hirschmann Industries Suzhou Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-01-07
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a novel extrusion die, which comprises an outer die, wherein one side in the outer die is provided with two side-by-side circular truncated cone-shaped cavities, the circular truncated cone-shaped cavities form a left-right opening structure for the outer die, one end of the outer die, which is close to an opening with the smaller diameter of the circular truncated cone-shaped cavity, is provided with an extrusion port, the two circular truncated cone-shaped cavities are communicated in the axial direction, one sides, which are close to the two extrusion ports, are communicated, the inner die is inserted into the circular truncated cone-shaped cavities from the end surface of the circular truncated cone-shaped cavities, the circular truncated cone-shaped cavities can ensure that the inner space of the outer die is uniform and smooth, the inner space of the outer die has no dead angle, the rubber material can smoothly pass through after being fed, the production stability is stronger, the rubber material does not stay at high temperature and scorch for a long time without dead angle part, the appearance is not bad, the high-voltage breakdown of wires is not caused, and the pressure of the rubber material flow is also ensured to be the same, avoid causing the line footpath of wire rod to fluctuate greatly.

Description

Novel extrusion die

Technical Field

The utility model relates to the technical field of extrusion dies, in particular to a novel extrusion die.

Background

With the development of society, the automation degree is higher and higher, the requirement on the dimensional stability of products is higher and higher, especially for the two-core and multi-core flat cable (see figure 7 that a plurality of wire cores 100 are arranged side by side), otherwise the continuity and the production efficiency of automatic processing are seriously influenced;

in the currently-used jig (see fig. 8 and 9), the bottom of the outer die 200 is flat, most of the glue flows to the flat bottom only in a direction towards the die opening and has dead angles, and the dead angles may cause the glue to stay for a long time and be burnt, which may cause poor appearance and high voltage breakdown of wires. Some of the compound can flow directly to the die without turning. This state causes a difference in the pressure of the material flow, resulting in a large fluctuation in the wire diameter of the wire.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel extrusion die, which aims to solve the problems that in the prior art, the bottom of an outer die is flat, most of glue flows to the flat bottom and only can be turned to flow to a die orifice to form a dead angle, and the dead angle part can cause the glue to stay for a long time and be burnt frequently, so that poor appearance and high-voltage breakdown of wires can be caused. Some sizing materials can directly flow to a die without turning, and the state can cause different material flow pressures and cause the problem of larger wire diameter fluctuation of wires.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel extrusion tooling, includes the external mold, inside one side of external mold is provided with two round platform chambeies side by side, open structure about the external mold forms is described to the round platform chamber, the one end that the external mold is close to the less opening part of round platform chamber diameter sets up to extruding opening.

Preferably, the two circular truncated cone-shaped cavities are communicated in the axial direction, and the sides of the two extrusion ports close to each other are communicated.

Preferably, the die further comprises an inner die, the inner die is inserted into the circular truncated cone-shaped cavity from the end face of the circular truncated cone-shaped cavity, and one end of the inner die inserted into the circular truncated cone-shaped cavity is a conical part.

Preferably, the conical part is close to one end of the extrusion opening, and an inner mold discharging barrel is arranged at a position corresponding to the extrusion opening and penetrates through the extrusion opening.

Preferably, an installation part is arranged at one end, away from the conical part, of the inner die, and connecting threads are arranged on the outer portion of the circumference of the installation part.

Preferably, the inner die has a hollow portion therein.

Compared with the prior art, the utility model has the beneficial effects that: the circular truncated cone-shaped cavity can enable the internal space of the external mold to be uniform and smooth, the internal space of the external mold has no dead angle, rubber can smoothly pass through the circular truncated cone-shaped cavity after being fed, the production stability is high, the situation that the rubber stays at high temperature and scorches for a long time due to no dead angle part exists, poor appearance and high-voltage breakdown of wires cannot be caused, the flowing pressure of the rubber is ensured to be the same, and the wire diameter fluctuation of the wires is prevented from being large.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an overall view of the present invention;

FIG. 3 is a schematic view of a first view of the inner mold of the present invention;

FIG. 4 is a schematic diagram of a second view of the inner mold of the present invention;

FIG. 5 is a schematic structural view of a first view of the outer mold of the present invention;

FIG. 6 is a second view structural diagram of the outer mold of the present invention;

FIG. 7 is a schematic view of a prior art arrangement of multiple wire cores in parallel;

FIG. 8 is an exploded view of an inner mold and an outer mold according to the prior art;

fig. 9 is a schematic view of the internal structure of an external mold in the prior art of the present invention.

In the figure: 1. an outer mold; 11. a circular truncated cone-shaped cavity; 12. an extrusion port; 2. an inner mold; 21. an installation part; 22. a hollow part; 23. a tapered portion; 24. an inner mold discharging barrel; 100. parallel linear; 200. the outer mold is formed; 300. the inner mold is formed.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, 5 and 6, in the embodiment of the present invention, a novel extrusion die includes an outer die 1, two side-by-side circular truncated cone shaped cavities 11 are disposed on one side inside the outer die 1, the circular truncated cone shaped cavities 11 enable an internal space of the outer die 1 to be in uniform and smooth transition, the internal space of the outer die 1 has no dead angle, so that a sizing material can pass through smoothly after being fed, the situation that the sizing material stays for a long time and is burnt at a high temperature is not caused due to no dead angle, an appearance is not bad, high voltage breakdown of wires is not caused, the pressure of the sizing material flow is also ensured to be the same, and the wire diameter fluctuation of the wires is prevented from being large;

with continuing reference to fig. 1, 5 and 6, the circular truncated cone-shaped cavity 11 forms a left-right opening structure for the outer die 1, the left-right opening structure is mainly used for feeding and discharging sizing materials and facilitating sizing, an extrusion port 12 is arranged at one end of the outer die 1 close to the opening with the smaller diameter of the circular truncated cone-shaped cavity 11, and the extrusion port 12 is used as the extrusion position of the sizing materials;

with continued reference to fig. 1, 5 and 6, the two truncated cone-shaped cavities 11 are communicated in the axial direction, and the sides of the two extrusion ports 12 close to each other are communicated, so that the extruded wire core sheath can be integrated;

as shown in fig. 1, 2, 3 and 4, the inner die 2 is changed according to the shape and size of the outer die 1, and further includes the inner die 2, the inner die 2 is inserted into the circular truncated cone shaped cavity 11 from the end surface of the circular truncated cone shaped cavity 11, and one end of the inner die 2 inserted into the circular truncated cone shaped cavity 11 is provided with a tapered portion 23, which is provided as a tapered portion, so as to better insert the inner die 2 into the outer die 1;

referring to fig. 1, 2 and 3, the inner die 2 has a hollow portion 22 inside, the tapered portion 23 is close to one end of the extrusion port 12, and a inner die discharge barrel 24 is disposed at a position corresponding to the extrusion port 12, the inner die discharge barrel 24 penetrates through the extrusion port 12, and a conductor of a wire core can enter the inner die discharge barrel 24 through the hollow portion 22, so that the wire core can wrap the rubber compound outside the wire core when discharging;

as shown in fig. 2 and 3, the end of the inner mold 2 away from the tapered portion 23 is provided with a mounting portion 21, and the circumferential outer portion of the mounting portion 21 is provided with a connecting thread through which the inner mold can be locked on the mounting table.

The working principle and the using process of the utility model are as follows: when the device is used, firstly, a conductor of a wire core enters the inner die discharging cylinder 24 through the hollow part 22, the conductor is pulled out through the inner die discharging cylinder 24, then rubber material is fed from the large-diameter end of the circular truncated cone-shaped cavity 11, the rubber material moves along the two circular truncated cone-shaped cavities 11 inside, the internal space of the outer die 1 is in uniform and smooth transition, the internal space of the outer die 1 has no dead angle, the rubber material can smoothly pass through after being fed, the condition that the rubber material stays at high temperature and scorches for a long time without dead angle parts, poor appearance and high-voltage breakdown of the wire material can not be caused, the pressure of the rubber material flow is ensured to be the same, the wire diameter fluctuation of the wire material is prevented from being large, the rubber material is discharged from the extrusion port 12, the conductor is discharged from the inner die discharging cylinder 24 at the moment, the rubber material can be coated outside the conductor, and the rubber material extruded by the two circular truncated cone-shaped cavities 11 is axially communicated, so that the rubber materials extruded by the two extrusion ports 12 can be connected together, so that the two wire cores can be better connected together.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel extrusion tooling, includes external mold (1), its characterized in that: the extrusion die is characterized in that at least two parallel circular truncated cone-shaped cavities (11) are arranged on one side of the interior of the outer die (1), the circular truncated cone-shaped cavities (11) form a left-right opening structure for the outer die (1), and one end, close to an opening with a smaller diameter of the circular truncated cone-shaped cavity (11), of the outer die (1) is provided with an extrusion opening (12).

2. The novel extrusion die of claim 1, wherein: the two circular truncated cone-shaped cavities (11) are communicated in the axial direction, and one sides of the two extrusion ports (12) which are close to each other are communicated.

3. The novel extrusion die of claim 1, wherein: the inner die (2) is inserted into the circular truncated cone-shaped cavity (11) from the end face of the circular truncated cone-shaped cavity (11), and the end, inserted into the circular truncated cone-shaped cavity (11), of the inner die (2) is provided with a conical part (23).

4. A novel extrusion die as claimed in claim 3, wherein: the conical part (23) is close to one end of the extrusion opening (12), an inner die discharging barrel (24) is arranged at a position corresponding to the extrusion opening (12), and the inner die discharging barrel (24) penetrates through the extrusion opening (12).

5. The novel extrusion die of claim 4, wherein: the one end that interior mould (2) kept away from toper portion (23) is equipped with installation department (21), and the circumference outside of installation department (21) is equipped with connecting thread.

6. The novel extrusion die of claim 5, wherein: the inner die (2) is internally provided with a hollow part (22).